parser.java

这是一个法律事务所系统源码

			throw new ParseException(reader.mark(), 
						 Constants.getString
						 ("jsp.error.unterminated", 
						  new Object[] { OPEN_FORWARD }));
		    reader.advance(CLOSE_FORWARD.length());
		}
		else
		    reader.advance(CLOSE_FORWARD_NO_BODY.length());
		
		Mark stop = reader.mark();
		listener.setTemplateInfo(parser.tmplStart, parser.tmplStop);		
		listener.handleForward(start, stop, attrs, param);
		return true;
	    } else
		return false;
	}
    }

    static {
	coreElements.addElement(new Forward());
    }


    /*
     * Jsp comments <%--  stuff --%>
     */

    // declarations
    static final class Comment implements CoreElement {

	private static final String OPEN_COMMENT  = "<%--";
	private static final String CLOSE_COMMENT = "--%>";

	public boolean accept(ParseEventListener listener, JspReader reader, Parser parser) 
	    throws JasperException 
	{

	    if (reader.matches(OPEN_COMMENT)) {
		reader.advance(OPEN_COMMENT.length());
		Mark start = reader.mark();
		Mark stop = reader.skipUntil(CLOSE_COMMENT);
		if (stop == null)
		    throw new ParseException(Constants.getString("jsp.error.unterminated", 
                                                                 new Object[] { OPEN_COMMENT }));

		parser.flushCharData(parser.tmplStart, parser.tmplStop);
		return true;
	    }
	    return false;
	}
    }
	
    static {
	coreElements.addElement(new Comment());
    }

    /*
     * Scripting elements
     */
    
    // declarations
    static final class Declaration implements CoreElement {

	private static final String OPEN_DECL  = "<%!";
	private static final String CLOSE_DECL = "%>";

        private static final JspUtil.ValidAttribute[] validAttributes = {
        };

	public boolean accept(ParseEventListener listener, JspReader reader, Parser parser) 
	    throws JasperException 
	{
	    String close, open, end_open = null;
            Hashtable attrs = null;
	    Mark start;
				
	    if (reader.matches(OPEN_DECL)) {
		open = OPEN_DECL;
		close = CLOSE_DECL;
	    } else
		return false;

	    reader.advance(open.length());
	    start = reader.mark();

            if (end_open != null) {
                attrs = reader.parseTagAttributes();

		reader.skipSpaces();
		if (!reader.matches(end_open)) 
		    throw new ParseException(reader.mark(),
			Constants.getString("jsp.error.unterminated"));
	        reader.advance(end_open.length());
		reader.skipSpaces();

		JspUtil.checkAttributes("Declaration", attrs, validAttributes, start);
            }

	    Mark stop = reader.skipUntil(close);
	    if (stop == null)
		throw new ParseException(Constants.getString("jsp.error.unterminated", 
                                                             new Object[] { open }));

	    listener.setTemplateInfo(parser.tmplStart, parser.tmplStop);	    
	    listener.handleDeclaration(start, stop, attrs);
	    return true;
	}
    }
	
    static {
	coreElements.addElement(new Declaration());
    }
    
    
    // expressions
    static final class Expression implements CoreElement {

	private static final String OPEN_EXPR  = "<%=";
	private static final String CLOSE_EXPR = "%>";

        private static final JspUtil.ValidAttribute[] validAttributes = {
        };

	public boolean accept(ParseEventListener listener, JspReader reader, Parser parser) 
	    throws JasperException
	{
	    String close, open, end_open=null;
            Hashtable attrs = null;
	    Mark start;
		
	    if (reader.matches(OPEN_EXPR)) {
		open = OPEN_EXPR;
		close = CLOSE_EXPR;
	    } else
		return false;

	    reader.advance(open.length());
	    start = reader.mark();

            if (end_open != null) {
                attrs = reader.parseTagAttributes();

		reader.skipSpaces();
		if (!reader.matches(end_open)) 
		    throw new ParseException(reader.mark(),
			Constants.getString("jsp.error.unterminated"));
	        reader.advance(end_open.length());
		reader.skipSpaces();

                JspUtil.checkAttributes("Expression", attrs, validAttributes, start);
            }

	    Mark stop = reader.skipUntil(close);
	    if (stop == null)
		throw new ParseException(reader.mark(), 
                                         Constants.getString("jsp.error.unterminated", 
                                                                 new Object[] { open }));
	    listener.setTemplateInfo(parser.tmplStart, parser.tmplStop);	    
	    listener.handleExpression(start, stop, attrs);
	    return true;
	}
    }

    static {
	coreElements.addElement(new Expression());
    }

    // scriptlets
    static final class Scriptlet implements CoreElement {

	private static final String OPEN_SCRIPTLET  = "<%";
	private static final String CLOSE_SCRIPTLET = "%>";

        private static final JspUtil.ValidAttribute[] validAttributes = {
        };

	public boolean accept(ParseEventListener listener, JspReader reader, Parser parser) 
	    throws JasperException
	{
	    String close, open, end_open = null;
            Hashtable attrs = null;
	    Mark start;
	    
	    if (reader.matches(OPEN_SCRIPTLET)) {
		open = OPEN_SCRIPTLET;
		close = CLOSE_SCRIPTLET;
	    } else
		return false;
		
	    reader.advance(open.length());
	    start = reader.mark();

            if (end_open != null) {
                attrs = reader.parseTagAttributes();

		reader.skipSpaces();
		if (!reader.matches(end_open)) 
		    throw new ParseException(reader.mark(),
			Constants.getString("jsp.error.unterminated"));
	        reader.advance(end_open.length());
		reader.skipSpaces();

                JspUtil.checkAttributes("Scriptlet", attrs, validAttributes, start);
            }

	    Mark stop = reader.skipUntil(close);
	    if (stop == null)
		throw new ParseException(reader.mark(), 
                                         Constants.getString("jsp.error.unterminated", 
                                                                 new Object[] { open }));
	    listener.setTemplateInfo(parser.tmplStart, parser.tmplStop);	    
	    listener.handleScriptlet(start, stop, attrs);
	    return true;
	}
    }

    static {
	coreElements.addElement(new Scriptlet());
    }

    /*
     * UseBean
     */
    static final class Bean implements CoreElement {

	private static final String OPEN_BEAN  = "<jsp:useBean";
	private static final String CLOSE_BEAN = "/>";
	private static final String CLOSE_BEAN_2 = "</jsp:useBean>";
	private static final String CLOSE_BEAN_3 = ">";

	private static final JspUtil.ValidAttribute[] validAttributes = {
	   new JspUtil.ValidAttribute("id"),
	   new JspUtil.ValidAttribute("scope"),
	   new JspUtil.ValidAttribute("class"),
	   new JspUtil.ValidAttribute("type"),
	   new JspUtil.ValidAttribute("beanName")
	};

	public boolean accept(ParseEventListener listener, JspReader reader, Parser parser) 
	    throws JasperException 
	{
	    if (reader.matches(OPEN_BEAN)) {
		Mark start = reader.mark();
		reader.advance(OPEN_BEAN.length());
		Hashtable attrs = reader.parseTagAttributesBean();
	        JspUtil.checkAttributes ("useBean", attrs, validAttributes, start);
		reader.skipSpaces();
		if (!reader.matches(CLOSE_BEAN)) {
		    if (!reader.matches(CLOSE_BEAN_3))
			throw new ParseException(reader.mark(),
                                                 Constants.getString("jsp.error.unterminated", 
                                                                 new Object[] { "useBean" }));
		    reader.advance(CLOSE_BEAN_3.length());
                    Mark stop = reader.mark();
		    listener.setTemplateInfo(parser.tmplStart, parser.tmplStop);		    
                    listener.handleBean(start, stop, attrs);
		    int oldSize = reader.size;
		    parser.parse(CLOSE_BEAN_2);
		    if (oldSize != reader.size) {
			throw new ParseException (reader.mark(), 
                                                  Constants.getString("jsp.error.usebean.notinsamefile"));
		    }
		    if (!reader.matches(CLOSE_BEAN_2))
			throw new ParseException(reader.mark(), 
                                                 Constants.getString("jsp.error.unterminated"
								     , 
                                                                     new Object[] { OPEN_BEAN })
						 );

		    reader.advance (CLOSE_BEAN_2.length());
		    
                    listener.handleBeanEnd(start, stop, attrs);
                    return true;
		} else {
                    reader.advance(CLOSE_BEAN.length());
                    Mark stop = reader.mark();
		    listener.setTemplateInfo(parser.tmplStart, parser.tmplStop);		    
                    listener.handleBean(start, stop, attrs);
                    listener.handleBeanEnd(start, stop, attrs);
                    return true;
                }
	    } else
		return false;
	}
    }

    static {
	coreElements.addElement(new Bean());
    }

    /*
     * GetProperty
     */
    static final class GetProperty implements CoreElement {

	private static final String OPEN_GETPROPERTY  = "<jsp:getProperty";
	private static final String CLOSE_GETPROPERTY = "/>";
	
	private static final JspUtil.ValidAttribute[] validAttributes = {
	   new JspUtil.ValidAttribute("name", true),
	   new JspUtil.ValidAttribute("property", true)
	};

	public boolean accept(ParseEventListener listener, JspReader reader, Parser parser) 
	    throws JasperException 
	{
	    if (reader.matches(OPEN_GETPROPERTY)) {
		Mark start = reader.mark();
		reader.advance(OPEN_GETPROPERTY.length());
		Hashtable attrs = reader.parseTagAttributes ();
	        JspUtil.checkAttributes ("getProperty", attrs, validAttributes, start);
		reader.skipSpaces();
		if (!reader.matches(CLOSE_GETPROPERTY))
		    throw new ParseException(reader.mark(), 
                                             Constants.getString("jsp.error.unterminated", 
                                                                 new Object[] { OPEN_GETPROPERTY }));
		else
		    reader.advance(CLOSE_GETPROPERTY.length());
		Mark stop = reader.mark();
		listener.setTemplateInfo(parser.tmplStart, parser.tmplStop);		
		listener.handleGetProperty(start, stop, attrs);
		return true;
	    } else
		return false;
	}
    }

    static {
	coreElements.addElement(new GetProperty());
    }
    
    /*
     * SetProperty
     */
    static final class SetProperty implements CoreElement {

	private static final String OPEN_SETPROPERTY  = "<jsp:setProperty";
	private static final String CLOSE_SETPROPERTY = "/>";
	
	private static final JspUtil.ValidAttribute[] validAttributes = {
	   new JspUtil.ValidAttribute("name", true),
	   new JspUtil.ValidAttribute("property", true),
	   new JspUtil.ValidAttribute("value"),
	   new JspUtil.ValidAttribute("param")
	};

	public boolean accept(ParseEventListener listener, JspReader reader, Parser parser) 
	    throws JasperException 
	{
	    if (reader.matches(OPEN_SETPROPERTY)) {
		Mark start = reader.mark();
		reader.advance(OPEN_SETPROPERTY.length());
		Hashtable attrs = reader.parseTagAttributes ();
	        JspUtil.checkAttributes ("setProperty", attrs, validAttributes, start);
		reader.skipSpaces();
		if (!reader.matches(CLOSE_SETPROPERTY))
		    throw new ParseException(reader.mark(), 
                                             Constants.getString("jsp.error.unterminated", 
                                                                 new Object[] { OPEN_SETPROPERTY }));
		else
		    reader.advance(CLOSE_SETPROPERTY.length());
		Mark stop = reader.mark();
		listener.setTemplateInfo(parser.tmplStart, parser.tmplStop);		
		listener.handleSetProperty(start, stop, attrs);
		return true;
	    } else
		return false;
	}
    }